body {
    background-color: #f5f5f5;
}

#main {
    min-height: 100vh;
    padding-top: 100px;
    padding-bottom: 100px;
}

.main-section {
    height: 800px;
    background-image: url('https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?q=80&w=2070&auto=format&fit=crop');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #ffffff;
    position: relative;
}

.main-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.main-section .main-title,
.main-section .main-desc {
    position: relative;
    z-index: 2;
}

.main-section .main-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.main-section .main-desc {
    font-size: 1.2rem;
    max-width: 800px;
    line-height: 1.6;
    color: #ffffff;
}

.strategy-content {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-group {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.strategy-section {
    background-color: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.section-title {
    color: #333;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eee;
}

.strategy-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.strategy-item {
    margin-bottom: 1rem;
    line-height: 1.6;
    color: #444;
}

.strategy-item:last-child {
    margin-bottom: 0;
}

.numbered-list {
    counter-reset: item;
    list-style-type: none;
    padding-left: 1rem;
}

.numbered-list .strategy-item {
    counter-increment: item;
    position: relative;
    padding-left: 2rem;
}

.numbered-list .strategy-item::before {
    content: counter(item) ".";
    position: absolute;
    left: 0;
    color: #666;
    font-weight: bold;
}

.timeline-list .strategy-item {
    position: relative;
    padding-left: 1.5rem;
}

.timeline-list .strategy-item::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #666;
}

@media (max-width: 768px) {
    .strategy-content {
        padding: 1rem;
    }
    
    .strategy-section {
        padding: 1.5rem;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
}